[TheForge] Slack tank

[peter fels & phoebe palmer]

Off the top of my head...a plastic bottle with lead in the bottom and 
air in the top should do it.

On 12/17/2010 2:34 PM, xlch58 at swbell.net wrote:
> The air pillow is very bouyant, but the pool cover it supports is not.
> The air pillow caused the cover to peak and shed water better and
> insures a dead layer of air (insulation) between the pool water and the
> cover.   Beyond that, the purpose of an ice compensator is to give the
> ice someplace to go, much like freeze plugs on a car (which I have never
> had save a block, but have had destroy one from overheating when they
> rusted out and ruptured).   What would be the mechanism whereby
> something floating above the ice layer would provide protection?
>
> Charles
>
>
> On 12/17/2010 4:05 PM, Bruce Freeman wrote:
>> https://secure3.milestechnologies.com/mybluepool/products/details.asp?categoryid=25&dealerID=21&productID=123
>>
>> (Air pillow to thwart ice damage to swimming pool.)
>>
>> On Fri, Dec 17, 2010 at 4:03 PM,<xlch58 at swbell.net>   wrote:
>>> I will bet that it isn't that simple.  I am guessing that if the item is
>>> too buoyant then there will not be enough of it submerged to assist.
>>> The wood probably avoids getting keyed into the ice because of the non
>>> linear density of water near freezing.  This would make the wood bob in
>>> slow motion.
>>>> <snip>
>>> Charles
>>>
> ______________________________________________________________
> TheForge mailing list
> Home: http://mailman.qth.net/mailman/listinfo/theforge
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:TheForge at mailman.qth.net
>
> TheForge mail list group photo site is
> http://www.photoworks.com
> Login: blacksmithblacksmith at hotmail.com
> Password: anvil
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>